Memorable Radio An interesting post from the excellent SWLing.com Blog got me thinking about memorable radio sounds and segments. The post referenced a piece done by "Twenty Thousand Hertz" on the historicity and significance of the NBC chimes. There was a lot there I did not know. One of the things I found most intriguing is the idea of how these three notes (originally 7!) have been a part of our culture for 90 years! They have signified triumphs and tragedies, milestones and things we would rather forget. And they were even used in WWII in a special way (No